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s390: switch to generic compat rt_sigaction 

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
hifive-unleashed-5.1
Al Viro 2012-12-25 18:49:25 -05:00
parent d7b5427cec
commit f036b94344
4 changed files with 2 additions and 49 deletions
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1
arch/s390/Kconfig
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@ -141,6 +141,7 @@ config S390
select MODULES_USE_ELF_RELA
select CLONE_BACKWARDS2
select GENERIC_SIGALTSTACK
select GENERIC_COMPAT_RT_SIGACTION
select GENERIC_COMPAT_RT_SIGQUEUEINFO
select GENERIC_COMPAT_RT_SIGPROCMASK
select GENERIC_COMPAT_RT_SIGPENDING

8
arch/s390/kernel/compat_linux.h
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@ -68,12 +68,6 @@ struct sigcontext32
};
/* asm/signal.h */
struct sigaction32 {
__u32 sa_handler; /* pointer */
__u32 sa_flags;
__u32 sa_restorer; /* pointer */
compat_sigset_t sa_mask; /* mask last for extensibility */
};
/* asm/ucontext.h */
struct ucontext32 {
@ -139,6 +133,4 @@ long sys32_fadvise64(int fd, loff_t offset, size_t len, int advise);
long sys32_fadvise64_64(struct fadvise64_64_args __user *args);
long sys32_sigaction(int sig, const struct old_sigaction32 __user *act,
struct old_sigaction32 __user *oact);
long sys32_rt_sigaction(int sig, const struct sigaction32 __user *act,
struct sigaction32 __user *oact, size_t sigsetsize);
#endif /* _ASM_S390X_S390_H */

40
arch/s390/kernel/compat_signal.c
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@ -194,46 +194,6 @@ sys32_sigaction(int sig, const struct old_sigaction32 __user *act,
return ret;
}
asmlinkage long
sys32_rt_sigaction(int sig, const struct sigaction32 __user *act,
struct sigaction32 __user *oact, size_t sigsetsize)
{
struct k_sigaction new_ka, old_ka;
unsigned long sa_handler;
int ret;
compat_sigset_t set32;
/* XXX: Don't preclude handling different sized sigset_t's. */
if (sigsetsize != sizeof(compat_sigset_t))
return -EINVAL;
if (act) {
ret = get_user(sa_handler, &act->sa_handler);
ret |= __copy_from_user(&set32, &act->sa_mask,
sizeof(compat_sigset_t));
new_ka.sa.sa_mask.sig[0] =
set32.sig[0] | (((long)set32.sig[1]) << 32);
ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
if (ret)
return -EFAULT;
new_ka.sa.sa_handler = (__sighandler_t) sa_handler;
}
ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
if (!ret && oact) {
set32.sig[1] = (old_ka.sa.sa_mask.sig[0] >> 32);
set32.sig[0] = old_ka.sa.sa_mask.sig[0];
ret = put_user((unsigned long)old_ka.sa.sa_handler, &oact->sa_handler);
ret |= __copy_to_user(&oact->sa_mask, &set32,
sizeof(compat_sigset_t));
ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
}
return ret;
}
static int save_sigregs32(struct pt_regs *regs, _sigregs32 __user *sregs)
{
_s390_regs_common32 regs32;

2
arch/s390/kernel/compat_wrapper.S
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@ -691,7 +691,7 @@ ENTRY(sys32_rt_sigaction_wrapper)
llgtr %r3,%r3 # const struct sigaction_emu31 *
llgtr %r4,%r4 # const struct sigaction_emu31 *
llgfr %r5,%r5 # size_t
jg sys32_rt_sigaction # branch to system call
jg compat_sys_rt_sigaction # branch to system call
ENTRY(sys32_rt_sigprocmask_wrapper)
lgfr %r2,%r2 # int